TAX CREDIT INFORMATION
Childtaxcredit.gov
and 
https://www.irs.gov/credits-deductions/individuals/earned-income-tax-credit-eitc

VOTER REGISTRATION INFORMATION
VIRGINIA
https://www.elections.virginia.gov/citizen-portal/
MARYLAND
https://elections.maryland.gov/voter_registration/application.html
DISTRICT OF COLUMBIA 
https://www.dcboe.org/Voters/Register-To-Vote/Register-to-Vote